4 ms·

I have a hard time believing your air mixing argument is a big issue for most people. Tonnes of people go snorkelling and don't experience the type of problems

I have a hard time believing your air mixing argument is a big issue for most people. Tonnes of people go snorkelling and don't experience the type of problems you mentioned. When you inhale the air inside a snorkel is more likely to have just been exhaled since it doesn't have anywhere it can go. To me this suggests your issue is either psychological or you have something else compromising your respiratory system and should definitely be taking every precaution against covid that you can

fredophile 6y ago
Apparently this was an unpopular opinion so I went back and checked the math. A snorkel is about 18 inches long with a diameter of 0.75 inches. This gives it a volume of 7.95 cubic inches or 130 ml. The poster I replied to suggested, in another comment, that rebreathing volumes as low as 50ml could be problematic. If that were the case you would run into major issues with snorkeling. I am not saying that there aren't people that have difficulty breathing in masks. I am saying that having difficulty wearing a mask is not normal and you should discuss it with your doctor to find out why.